CN117803736B - Cut-off valve - Google Patents
Cut-off valve Download PDFInfo
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- CN117803736B CN117803736B CN202410217248.7A CN202410217248A CN117803736B CN 117803736 B CN117803736 B CN 117803736B CN 202410217248 A CN202410217248 A CN 202410217248A CN 117803736 B CN117803736 B CN 117803736B
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- valve
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- fixed
- valve plate
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- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 15
- 239000002912 waste gas Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention provides a shut-off valve, which relates to the technical field of valves and comprises: the bottom of the valve body is provided with a through hole, the side wall of the valve body is provided with an exhaust pipe, and the through hole is connected with a connecting pipe; the upper part of the sealing plug is connected with a spring, and the sealing plug is longitudinally and movably arranged in the valve body and is used for blocking the top of the through hole; the fixed valve plate is in a circular tube shape and is fixedly arranged in the valve body, and a fixed valve exhaust notch is formed in the side wall of the fixed valve plate; the inner wall of the circular tube-shaped movable valve plate is in rotary sealing contact with the outer wall of the fixed valve plate; the upper end of the movable valve plate is sealed and is in rotary sealing connection with the top of the valve body through a rotating shaft, and the lower end of the movable valve plate is in rotary sealing fit with the bottom of the inner side of the valve body; the side wall of the movable valve plate is provided with a movable valve exhaust notch. The cut-off valve can be automatically opened and closed in the working process of the pressure reaction container; in addition, through the setting of stationary valve plate and movable valve plate for the use mode of trip valve is more nimble, holistic opening and close state is also more controllable.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a shut-off valve.
Background
The shut-off valve typically employs a pneumatic or electric actuator to adjust the operating state to control the on-off of the fluid in the pipeline. Some pressure reaction vessels need to exhaust gas through pipelines and valves in the working process, and the existing valves need to be manually opened and closed when exhausting the exhaust gas, so that the pressure reaction vessels are inconvenient to use.
Disclosure of Invention
Aiming at the situation, the invention provides a cut-off valve, which aims to solve the technical problems that the existing valve needs to be manually opened and closed when exhaust gas is exhausted, and the use is inconvenient.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the present invention provides a shut-off valve comprising:
The bottom of the valve body is provided with a through hole, the side wall of the valve body is provided with an exhaust pipe, and the through hole is connected with the pressure reaction vessel through a connecting pipe;
the upper part of the sealing plug is connected with a spring, and the sealing plug is longitudinally and movably arranged in the valve body and is used for blocking the top of the through hole;
The fixed valve plate is in a circular tube shape and is fixedly arranged in the valve body, and a fixed valve exhaust notch is formed in the side wall of the fixed valve plate;
The inner wall of the circular tube-shaped movable valve plate is in rotary sealing contact with the outer wall of the fixed valve plate; the upper end of the movable valve plate is sealed and is in rotary sealing connection with the top of the valve body through a rotating shaft, and the lower end of the movable valve plate is in rotary sealing fit with the bottom of the inner side of the valve body; the side wall of the movable valve plate is provided with a movable valve exhaust notch which can be matched with the fixed valve exhaust notch.
In some embodiments of the invention, further comprising:
the exhaust pipe and the feeding pipe are positioned on the opposite sides of the valve body;
the fixed valve feeding notch, the fixed valve feeding notch and the fixed valve exhausting notch are positioned on opposite sides of the fixed valve plate;
the movable valve feeding notch and the movable valve exhausting notch are arranged on the side wall of the movable valve plate at 90 degrees;
the guide pipe is positioned outside the valve body, the bottom of the valve body is provided with a material leakage hole, one end of the guide pipe is connected with the material leakage hole, and the other end of the guide pipe is connected with the side wall of the connecting pipe; the catheter is provided with a unidirectional component;
one end of the baffle is fixed on the outer wall of the movable valve plate, and the other end of the baffle is in sliding sealing contact with the inner wall of the valve body;
One end of the stop block is fixed on the outer wall of the movable valve plate, and the other end of the stop block is in sliding sealing contact with the inner wall of the valve body;
When the movable valve feeding notch is communicated with the fixed valve feeding notch, the movable valve exhaust notch is not communicated with the fixed valve exhaust notch, the feeding pipe is positioned between the baffle and the baffle, and the inlet of the exhaust pipe is blocked by the baffle; when the movable valve exhaust notch is communicated with the fixed valve exhaust notch, the movable valve feeding notch is not communicated with the fixed valve feeding notch.
In some embodiments of the invention, further comprising:
the torsion spring is arranged on the rotating shaft;
and one side of the stop block is provided with a groove, and the elastic film is arranged at the inlet of the groove.
In some embodiments of the invention, further comprising:
The limiting pin is spliced with one side of the stop block, which faces the valve body;
One end of the pressure spring is connected with the limiting pin, and the other end of the pressure spring is connected with the stop block;
after the limiting pin is separated from the inner wall of the valve body, one end of the limiting pin can be exposed from the stop block under the reset force of the pressure spring; when one end of the limiting pin is contacted with the upper side of the inner wall of the exhaust pipe, the rotation of the stop block and the movable valve plate can be blocked by the limiting pin; when one end of the limiting pin is contacted with the lower side of the inner wall of the exhaust pipe, the limiting pin is retracted into the stop block due to being extruded by the inner wall of the exhaust pipe.
In some embodiments of the invention, a filter screen is arranged at the vent notch of the movable valve.
In some embodiments of the invention, further comprising:
The sliding block is in sliding fit in the groove;
The limiting rod is connected with the stop block in a sliding manner; one end of the limiting rod is in movable contact with the sliding block, the other end of the limiting rod is provided with a plug-in part, the limiting pin is provided with a slot matched with the plug-in part, and when the limiting pin is completely retracted into the stop block, the plug-in part is plugged into the slot.
In some embodiments of the invention, the bottom of the valve body is removably mounted with a plug.
In some embodiments of the invention, a sealing process is provided between the plug and the valve body.
In some embodiments of the invention, the upper end of the shaft extends outside the valve body.
In some embodiments of the invention, a guide rod is connected above the sealing plug, the guide rod is longitudinally matched with a guide post in a sliding way, the guide post is fixed on the movable valve plate, one end of a spring is connected with the guide post, and the other end of the spring is connected with the guide rod; the guide rod is connected with the spring through a steel ball.
The embodiment of the invention has at least the following advantages or beneficial effects:
The cut-off valve can be automatically opened and closed in the working process of the pressure reaction container; in addition, the matched use of the fixed valve plate and the movable valve plate is equivalent to the arrangement of a second valve (the sealing plug and the through hole are the first valve), and the working state of the whole cut-off valve can be controlled by adjusting the relative positions of the movable valve exhaust notch and the fixed valve exhaust notch; when the operation of exhausting waste gas is not needed, the air exhausting notch of the movable valve is staggered with the air exhausting notch of the fixed valve, and the whole cut-off valve is in a closed state and does not exhaust waste gas along with the rising of the pressure in the pressure reaction container; when the operation of exhausting waste gas is required to be executed, the air exhausting notch of the movable valve is communicated with the air exhausting notch of the fixed valve, and the whole cut-off valve is in an open state and can automatically exhaust waste gas along with the rising of the pressure in the pressure reaction container; that is, through the arrangement of the fixed valve plate and the movable valve plate, the use mode of the cut-off valve is more flexible, and the whole opening and closing state is also more controllable.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a shut-off valve;
FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the fixed valve feeding gap and the movable valve feeding gap when they are communicated;
FIG. 4 is an enlarged view of a portion of the B position of FIG. 2;
FIG. 5 is a schematic view of a stop lever;
FIG. 6 is an enlarged view of a portion of the C position of FIG. 3;
FIG. 7 is a schematic view of the structure of the embodiment 5 in which the fixed valve inlet notch and the movable valve outlet notch are in communication;
fig. 8 is a partial enlarged view of the D position in fig. 7.
Icon:
1-valve body, 11-through hole, 12-connecting pipe, 13-exhaust pipe, 14-feeding pipe,
2-Sealing plug, 21-spring, 22-guide rod, 23-guide post, 24-steel ball,
3-Fixed valve plate, 31-fixed valve exhaust notch, 32-fixed valve feeding notch,
4-Moving valve plate, 41-rotating shaft, 42-moving valve exhaust notch, 43-moving valve feeding notch,
51-Conduit, 52-baffle, 53-stopper, 54-leak orifice, 55-one-way assembly,
71-Elastic membrane, 72-groove, 73-limit pin, 74-pressure spring, 75-slider, 76-limit rod, 77-plug part, 78-slot, 79-block.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present invention.
In the description of embodiments of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting embodiments of the present invention.
In the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Embodiment 1 referring to fig. 1 to 3, the present embodiment provides a shut-off valve comprising a valve body 1, a sealing plug 2, a stationary valve plate 3 and a movable valve plate 4.
The valve body 1 is hollow cylindrical, the bottom of the valve body 1 is provided with a through hole 11, the through hole 11 is connected with the pressure reaction vessel through a connecting pipe 12, the side wall of the valve body 1 is provided with an exhaust pipe 13, and the exhaust pipe 13 is used for exhausting waste gas.
A spring 21 is connected above the sealing plug 2, and the sealing plug 2 is longitudinally movably arranged in the valve body 1 and is used for sealing the top of the through hole 11.
The fixed valve plate 3 is in a circular tube shape, the fixed valve plate 3 is fixedly arranged in the valve body 1, and a fixed valve exhaust notch 31 is formed in the side wall of the fixed valve plate 3.
The movable valve plate 4 is in a circular tube shape, and the inner wall of the movable valve plate 4 is in rotary sealing contact with the outer wall of the fixed valve plate 3; the upper end of the movable valve plate 4 is closed and is in rotary sealing connection with the top of the valve body 1 through a rotary shaft 41, and the lower end of the movable valve plate is in rotary sealing fit with the inner bottom of the valve body 1; the side wall of the movable valve plate 4 is provided with a movable valve exhaust notch 42. A filter screen (not labeled in the figure) is arranged at the position of the movable valve exhaust notch 42 so as to filter powder in the exhaust gas and reduce waste.
The upper end of the rotary shaft 41 extends outside the valve body 1 so as to drive the rotary shaft 41 and the movable valve plate 4 manually, electrically or pneumatically.
In the present embodiment, the sealing plug 2 is longitudinally movably provided in the valve body 1 in the following manner: the guide rod 22 is connected above the sealing plug 2, the guide rod 22 is longitudinally and slidably matched with the guide post 23, the guide post 23 is fixed on the movable valve plate 4, one end of the spring 21 is connected with the guide post 23, and the other end is connected with the guide rod 22. The guide rod 22 is connected with the spring 21 through the steel ball 24, so that the sealing surface of the sealing plug 2 is prevented from being worn due to the rotation of the sealing plug 2 following the valve plate 4.
When the device is used, the movable valve exhaust notch 42 and the fixed valve exhaust notch 31 can be aligned and communicated, and the state when the movable valve exhaust notch 42 and the fixed valve exhaust notch 31 are communicated is set as an initial state; during the working process of the pressure reaction container, powder materials are led into the pressure reaction container, along with the rising of the pressure in the pressure reaction container, the sealing plug 2 is pushed upwards to be separated from the through hole 11, and waste gas is discharged through the connecting pipe 12, the through hole 11, the fixed valve exhaust notch 31, the movable valve exhaust notch 42 and the exhaust pipe 13 in sequence (refer to the arrow pointing in fig. 2); as the pressure in the pressure reaction vessel decreases, the sealing plug 2 moves downward under the action of the dead weight and the spring 21 to block the through hole 11.
Therefore, the cut-off valve can be automatically opened and closed in the working process of the pressure reaction container; in addition, the matched use of the fixed valve plate 3 and the movable valve plate 4 is equivalent to the arrangement of a second valve (the sealing plug 2 and the through hole 11 are first valves), and the working state of the whole cut-off valve can be controlled by adjusting the relative positions of the movable valve exhaust notch 42 and the fixed valve exhaust notch 31; when the exhaust operation is not required to be executed, the movable valve exhaust notch 42 and the fixed valve exhaust notch 31 are staggered, and the whole shut-off valve is in a closed state and does not exhaust with the rise of the pressure in the pressure reaction vessel; when the exhaust operation is required to be executed, the movable valve exhaust notch 42 is communicated with the fixed valve exhaust notch 31, and the whole cut-off valve is in an open state, so that the exhaust gas can be automatically discharged along with the rising of the pressure in the pressure reaction container; that is, through the arrangement of the fixed valve plate 3 and the movable valve plate 4, the use mode of the cut-off valve is more flexible, and the overall opening and closing state is also more controllable.
Embodiment 2 referring to fig. 1 to 3, this embodiment is a further improvement on the basis of embodiment 1, in which the shut-off valve further comprises a feed pipe 14, a fixed valve feed gap 32, a movable valve feed gap 43, a guide pipe 51, a baffle plate 52 and a stopper 53.
The side wall of the valve body 1 is also provided with a feed pipe 14, and the exhaust pipe 13 and the feed pipe 14 are positioned on the opposite side of the valve body 1; the feed pipe 14 is used for introducing powder material, which is conveyed pneumatically.
The side wall of the fixed valve plate 3 is also provided with a fixed valve feeding notch 32, and the fixed valve feeding notch 32 and the fixed valve exhaust notch 31 are positioned on the opposite sides of the fixed valve plate 3; the valve-setting feed gap 32 is aligned with the feed tube 14 and the valve-setting vent gap 31 is aligned with the vent tube 13.
The side wall of the movable valve plate 4 is also provided with a movable valve feeding notch 43, and the movable valve feeding notch 43 and the movable valve exhausting notch 42 are separated by 90 degrees.
The guide pipe 51 is positioned outside the valve body 1, a material leakage hole 54 is formed in the bottom of the valve body 1, one end of the guide pipe 51 is connected with the material leakage hole 54, and the other end of the guide pipe 51 is connected with the side wall of the connecting pipe 12; the conduit 51 is provided with a one-way assembly 55. The one-way assembly 55 is in fact a one-way valve. The one-way assembly 55 is configured to allow only powder material and gas to enter the connecting tube 12 through the leak 54.
One end of the baffle plate 52 is fixed on the outer wall of the movable valve plate 4, and the other end is in sliding sealing contact with the inner wall of the valve body 1.
One end of the stopper 53 is fixed to the outer wall of the movable valve plate 4, and the other end is in sliding sealing contact with the inner wall of the valve body 1.
The stopper 53 and the baffle plate 52 separate the valve-moving feeding gap 43 and the valve-moving discharging gap 42, and when the valve-moving discharging gap 42 and the valve-moving discharging gap 31 are communicated, the valve-moving feeding gap 43 and the valve-moving feeding gap 32 are not communicated, and when the valve-moving feeding gap 43 and the valve-moving feeding gap 32 are communicated, the valve-moving discharging gap 42 and the valve-moving discharging gap 31 are not communicated, that is, the on-off state between the valve-moving feeding gap 43 and the valve-moving feeding gap 32 is opposite to the on-off state between the valve-moving discharging gap 42 and the valve-moving discharging gap 31, the reason for this is:
The pressure reaction vessel needs to feed and discharge waste gas in the working process, and the current cut-off valve can only control the inlet or outlet of fluid, so that the feeding and the waste gas discharge are respectively carried out through two independent pipelines (the two pipelines are respectively provided with a valve), and the manufacturing and maintenance cost of the pressure reaction vessel is increased along with the increase of the number of the pipelines and the interfaces on the pressure reaction vessel;
However, in this embodiment, through the arrangement of the feed pipe 14, the fixed valve feeding notch 32, the movable valve feeding notch 43, the guide pipe 51, the baffle plate 52 and the stop block 53, the shut-off valve has the functions of feeding and exhausting waste gas, specifically, when the movable valve feeding notch 43 and the fixed valve feeding notch 32 are communicated, the movable valve exhausting notch 42 and the fixed valve exhausting notch 31 are not communicated, the feed pipe 14 is positioned between the baffle plate 52 and the stop block 53, the inlet of the exhaust pipe 13 is blocked by the stop block 53, and at this time, powder material enters the connecting pipe 12 from the feed pipe 14 through the leak hole 54; when the valve-moving vent gap 42 and the valve-fixed vent gap 31 are in communication, the valve-moving feed gap 43 and the valve-fixed feed gap 32 are not in communication, and at this time, the exhaust gas can be discharged from the exhaust pipe 13 (see the foregoing for details).
In combination with the above, the present embodiment has at least the following advantages:
1. The shut-off valve has the functions of feeding and exhausting waste gas, and the shut-off valve is only connected with the pressure reaction vessel through the connecting pipe 12, and the number of pipelines and interfaces required by feeding and exhausting waste gas on the pressure reaction vessel is reduced.
2. The operation of the cut-off valve when switching the functions of feeding and exhausting waste gas is simple, and the cut-off valve can be correspondingly adjusted by only rotating the movable valve plate 4.
Embodiment 3 referring to fig. 1 to 4, this embodiment is a further improvement on the basis of embodiment 2, in which the shut-off valve further includes a torsion spring (not shown) and an elastic membrane 71.
The torsion spring is mounted on the rotary shaft 41 of the movable valve plate 4.
A groove 72 is provided on one side of the stopper 53, and an elastic membrane 71 is provided at an entrance of the groove 72. The elastic film 71 has a side surface area in a natural state equivalent to a side surface area of the barrier 52 (the side surface area of the elastic film 71 is smaller than or equal to the side surface area of the barrier 52).
When the movable valve exhaust notch 42 is communicated with the fixed valve exhaust notch 31, the movable valve feeding notch 43 is not communicated with the fixed valve feeding notch 32 so as to exhaust the exhaust gas, after the exhaust gas is exhausted, the powder material is fed between the baffle plate 52 and the baffle plate 53 by the feed pipe 14 through the protective gas, the elastic membrane 71 is deformed under the action of the air flow, the surface area of the elastic membrane 71 is increased, the thrust of the elastic membrane 71 by the air flow is larger than that of the baffle plate 52, and the movable valve plate 4 is rotated clockwise to the state shown in fig. 3 so as to enable the movable valve feeding notch 43 to be communicated with the fixed valve feeding notch 32.
Therefore, when the powder material is fed, the switching of the function of the cut-off valve (the switching of the exhaust gas into the feeding) can be automatically realized by utilizing the air flow for conveying the powder material.
Embodiment 4 referring to fig. 1 to 4, this embodiment is a further modification of embodiment 3 in that the shut-off valve further includes a stopper pin 73 and a compression spring 74.
The limit pin 73 is inserted into the stop 53 toward the valve body 1.
The compression spring 74 is located in the stopper 53, one end of the compression spring 74 is connected to the stopper 73, and the other end is connected to the stopper 53.
After the limit pin 73 contacts the inner wall of the valve body 1, the limit pin 73 can retract into the stopper 53; after the stopper pin 73 is separated from the inner wall of the valve body 1, one end of the stopper pin 73 can be exposed from the inside of the stopper 53 by the restoring force of the pressure spring 74, and, in the process of rotating the valve plate 4 clockwise to realize the feeding function (in the clockwise direction shown in fig. 3), when one end of the stopper pin 73 is separated from the inner wall of the valve body 1 and contacts the upper side of the inner wall of the exhaust pipe 13, the axes of both the stopper pin 73 and the exhaust pipe 13 are parallel, at this time, as shown in fig. 3 and 6, the rotation of the stopper 53 and the movable valve plate 4 can be blocked by the stopper pin 73; in the process of rotating the movable valve plate 4 counterclockwise to realize the exhaust gas exhausting function (in the clockwise and counterclockwise directions shown in fig. 3), when one end of the stopper pin 73 contacts the lower side of the inner wall of the exhaust pipe 13, the axes of both the stopper pin 73 and the exhaust pipe 13 are obliquely intersected, and at this time, the stopper pin 73 is retracted into the stopper 53 by being pressed by the inner wall of the exhaust pipe 13.
Therefore, the positioning of the baffle plate 52, the stop block 53, the valve-moving exhaust notch 42 and the valve-moving feeding notch 43 is facilitated in the process of switching the function of the cut-off valve by the arrangement of the limiting pin 73 and the pressure spring 74.
Embodiment 5 referring to fig. 1 to 8, this embodiment is a further improvement on the basis of embodiment 4, in which the shut-off valve further comprises a slider 75 and a stopper 76.
The slider 75 is a sliding fit within the recess 72.
The limiting rod 76 is in sliding connection with the stop block 53; one end of the limiting rod 76 is movably contacted with the sliding block 75, the other end of the limiting rod is provided with a plug-in part 77, the limiting pin 73 is provided with a slot 78 matched with the plug-in part 77, and when the limiting pin 73 is completely retracted into the stop block 53, the plug-in part 77 is plugged with the slot 78 so as to prevent the limiting pin 73 from being exposed out of the stop block 53.
After exhaust gas is exhausted, powder materials are fed between the baffle plate 52 and the stop block 53 by the feed pipe 14 through the protective gas, the elastic membrane 71 deforms under the action of air flow, the surface area of the elastic membrane 71 is increased, the thrust of the elastic membrane 71 by the air flow is larger than that of the baffle plate 52 by the air flow (the action of the elastic membrane 71 is similar to that of a sail), meanwhile, the deformed elastic membrane 71 pushes the limiting rod 76 through the sliding block 75, so that the inserting connection part 77 is separated from the inserting groove 78, and the stop block 53 and the movable valve plate 4 are conveniently blocked from rotating through the limiting pin 73 after the movable valve plate 4 rotates clockwise to be communicated with the movable valve feeding notch 43 and the fixed valve feeding notch 32 as shown in fig. 2.
In addition, the movable valve plate 4 may be rotated by other means to rotate the movable valve plate 4 to the state shown in fig. 7 without deformation of the elastic membrane 71 and separation of the insertion portion 77 from the insertion slot 78, so that the movable valve exhaust notch 42 and the fixed valve feed notch 32 are communicated and maintained (in embodiments 1 to 4, they are not communicated), at this time, the function of the feed pipe 14 may be changed, for example, the feed pipe 14 may be used to introduce the raw material gas to be filtered into the pressure reaction vessel, and the impurities may be intercepted by the filter screen at the movable valve exhaust notch 42, which is advantageous for further reducing the number of ports on the pressure reaction vessel. In order to facilitate the discharge of the filtered impurities, a block 79 may be detachably mounted at the bottom of the valve body 1, sealing treatment may be performed between the block 79 and the valve body 1, and the filtered impurities may be discharged after the block 79 is removed.
Finally, it should be noted that: the above is only a preferred embodiment of the present application, and it is not intended to limit the present application, and various modifications and variations of the present application may be possible to those skilled in the art, and the embodiments of the present application and features in the embodiments may be arbitrarily combined with each other without collision. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A shut-off valve, comprising:
The bottom of the valve body is provided with a through hole, the side wall of the valve body is provided with an exhaust pipe, and the through hole is connected with the pressure reaction container through a connecting pipe;
The upper part of the sealing plug is connected with a spring, and the sealing plug is longitudinally and movably arranged in the valve body and used for blocking the top of the through hole;
the fixed valve plate is in a circular tube shape and is fixedly arranged in the valve body, and a fixed valve exhaust notch is formed in the side wall of the fixed valve plate;
The inner wall of the circular tube-shaped movable valve plate is in rotary sealing contact with the outer wall of the fixed valve plate; the upper end of the movable valve plate is sealed and is in rotary sealing connection with the top of the valve body through a rotating shaft, and the lower end of the movable valve plate is in rotary sealing fit with the bottom of the inner side of the valve body; the side wall of the movable valve plate is provided with a movable valve exhaust notch which can be matched with the fixed valve exhaust notch;
Further comprises:
The exhaust pipe and the feeding pipe are positioned on opposite sides of the valve body;
The fixed valve feeding notch and the fixed valve exhausting notch are positioned on the opposite sides of the fixed valve plate;
the movable valve feeding notch and the movable valve exhaust notch are arranged on the side wall of the movable valve plate at a distance of 90 degrees;
the guide pipe is positioned outside the valve body, a material leakage hole is formed in the bottom of the valve body, one end of the guide pipe is connected with the material leakage hole, and the other end of the guide pipe is connected with the side wall of the connecting pipe; the catheter is provided with a unidirectional component;
One end of the baffle is fixed on the outer wall of the movable valve plate, and the other end of the baffle is in sliding sealing contact with the inner wall of the valve body;
One end of the stop block is fixed on the outer wall of the movable valve plate, and the other end of the stop block is in sliding sealing contact with the inner wall of the valve body;
When the movable valve feeding notch is communicated with the fixed valve feeding notch, the movable valve exhaust notch is not communicated with the fixed valve exhaust notch, the feeding pipe is positioned between the baffle and the stop block, and the inlet of the exhaust pipe is blocked by the stop block; when the movable valve exhaust notch is communicated with the fixed valve exhaust notch, the movable valve feeding notch is not communicated with the fixed valve feeding notch;
The upper part of the sealing plug is connected with a guide rod, the guide rod is longitudinally matched with a guide post in a sliding way, the guide post is fixed on the movable valve plate, one end of the spring is connected with the guide post, and the other end of the spring is connected with the guide rod; the guide rod is connected with the spring through a steel ball.
2. The shut-off valve of claim 1, further comprising:
The torsion spring is arranged on the rotating shaft;
And the elastic membrane is arranged at the inlet of the groove.
3. The shut-off valve of claim 2, further comprising:
the limiting pin is spliced with one side of the stop block, which faces the valve body;
One end of the pressure spring is connected with the limiting pin, and the other end of the pressure spring is connected with the stop block;
After the limiting pin is separated from the inner wall of the valve body, one end of the limiting pin can be exposed out of the stop block under the resetting force of the pressure spring; when one end of the limiting pin is contacted with the upper side of the inner wall of the exhaust pipe, the stop block and the movable valve plate can be blocked from rotating by the limiting pin; when one end of the limiting pin is in contact with the lower side of the inner wall of the exhaust pipe, the limiting pin is retracted into the stop block due to being extruded by the inner wall of the exhaust pipe.
4. A shut-off valve according to claim 3 wherein a screen is provided at the valve relief notch.
5. The shut-off valve of claim 4, further comprising:
The sliding block is in sliding fit in the groove;
The limiting rod is connected with the stop block in a sliding manner; one end of the limiting rod is in movable contact with the sliding block, the other end of the limiting rod is provided with a plug-in portion, the limiting pin is provided with a slot matched with the plug-in portion, and when the limiting pin is completely retracted into the stop block, the plug-in portion is plugged in the slot.
6. The shut-off valve of claim 5 wherein the bottom of the valve body is removably mounted with a plug.
7. The shut-off valve of claim 6 wherein the seal between the plug and the valve body is treated.
8. The shut-off valve of claim 1 wherein the upper end of the shaft extends beyond the valve body.
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| CN202410217248.7A CN117803736B (en) | 2024-02-28 | 2024-02-28 | Cut-off valve |
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| CN202410217248.7A CN117803736B (en) | 2024-02-28 | 2024-02-28 | Cut-off valve |
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